As you know, Google rolled out Penguin 2.0 By May 22nd, only 2.3% of the sites in Google’s index have taken a hit from it. Needless to say, Penguin 2.0 was nothing compared to the first iteration.
Some say that Google Penguin 2.0 was less harsh than the first.
But I think that it had more to do with the fact that most SEOs that changed their link building approach after Penguin 1.0. Blog comments were replaced by guest blogging. Profile links were replaced with broken link building. And many black hatters (myself included) went legit.